F7-T4 Install Woes (LVM, RAID, grub)

Last night I finally found the time to install F7-T4 on one of my test
boxes. It was a vast improvement over the previous test releases in
that I actually managed to run the installer in its entirety. It
recognized my RAID 1 devices and my LVM setup. All seemed to be well.
Then, the install finished and I hit the Reboot button. The result was
the Grub prompt. No panic, I'm quite familiar with Grub. So, I
proceeded to use the Grub interface to manually boot the new install. I
set the root device to what I knew was the /boot partition. A few
commands later, I was puzzled. I was getting #12 and #13 grub errors.
Odd, but still no panic. I have a backup of a previous boot partition
that I can use. Same problem. Hmmm... I decided to run the Grub find
command. It returned the following devicies which are actually an
ubuntu install that I had preserved: (hd0,8) & (hd1,8). Now I started
to panic. I'm quite sure that my two boot partitions (primary & copy)
are (hd0,0) & (hd1,2). Oh well, I think that maybe something has
changed. So I try to utilize either of these. More #12 & #13
errors.
I just booted with Knoppix to assess the damage. The /boot (ext3)
and /var (RAID1 ext3) partitions are completely empty, and the / (RAID1
ext3) partition seems to only be partially populated. The remainder of
my partitions are LVM, but I'm not going to spend any time assessing the
damage as I know it's probably not good.
Any known issues that might cause this?
Thanks,
-- Brian